Lexus NX: Lost Communication with Haptic Device (B1323-B1326)

Lexus NX Service Manual / Audio & Visual & Telematics / Navigation / Multi Info Display / Navigation System / Lost Communication with Haptic Device (B1323-B1326)

DESCRIPTION

These DTCs are stored when communication between the radio receiver assembly and remote operation controller assembly (remote touch), combination meter assembly, combination meter mirror ECU* or clock assembly is not possible.

*: w/ Headup Display

DTC No.	Detection Item	DTC Detection Condition	Trouble Area
B1323	Lost Communication with Haptic Device	CAN reception error	Local bus communication line Remote operation controller assembly (remote touch) power source circuit Remote operation controller assembly (remote touch) Radio receiver assembly Harness or connector No. 10 CAN junction connector
B1324	Lost Communication with Meter	CAN reception error	Local bus communication line Combination meter assembly power source circuit Combination meter assembly Radio receiver assembly Harness or connector No. 10 CAN junction connector
B1325	Lost Communication with HUD	CAN reception error	Local bus communication line Combination meter mirror ECU power source circuit Combination meter mirror ECU Radio receiver assembly Harness or connector No. 10 CAN junction connector
B1326	Lost Communication with Clock Device (Local-CAN)	CAN reception error	Local bus communication line Clock assembly power source circuit Clock assembly Radio receiver assembly Harness or connector No. 10 CAN junction connector

HINT:

The radio receiver assembly is the master unit.

WIRING DIAGRAM

CAUTION / NOTICE / HINT

NOTICE:

When replacing the radio receiver assembly, always replace it with a new one.
If a radio receiver assembly which was installed to another vehicle is used, the following may occur:
- A communication malfunction DTC may be stored.
- The radio receiver assembly may not operate normally.
Inspect the fuses for circuits related to this system before performing the following procedure.
After turning the power switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal.
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When disconnecting and reconnecting the auxiliary battery.
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HINT:

When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

Click here

HINT:

B1323, B1324, B1325 and B1326 will not continue to output when clear DTC is performed even if the malfunction continues.
Depending on the parts that are replaced during vehicle inspection or maintenance, performing initialization, registration or calibration may be needed. Refer to Precaution for Navigation System.
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PROCEDURE

CHECK DTC

(a) Check for DTCs.

Click here

Body Electrical > Navigation System > Trouble Codes

Result	Proceed to
DTCs B1323, B1324, B1325* and B1326 are output	A
DTC B1323 is output	B
DTC B1324 is output	C
DTCs B1325 is output*	D
DTC B1326 is output	E

GO TO STEP 3

GO TO STEP 16

GO TO STEP 20

GO TO STEP 24

2.	CHECK LOCAL BUS

(a) Disconnect the cable from the negative (-) auxiliary battery terminal.

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection	Condition	Specified Condition
I164-7 - I164-18	Cable disconnected from negative (-) auxiliary battery terminal	54 to 69 Ω

Result	Proceed to
OK	A
NG (Below 54 Ω)	B
NG (70 Ω or higher)	C

USE SIMULATION METHOD TO CHECK

GO TO STEP 5

GO TO STEP 18

3.	CHECK HARNESS AND CONNECTOR (REMOTE OPERATION CONTROLLER ASSEMBLY [REMOTE TOUCH] POWER SOURCE)

(a) Disconnect the remote operation controller assembly (remote touch) connector.

*a	Front view of wire harness connector (to Remote Operation Controller Assembly [Remote Touch])

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection	Condition	Specified Condition
I71-10 (GND) - Body ground	Always	Below 1 Ω

Standard Voltage:

Tester Connection	Condition	Specified Condition
I71-1 (+B) - Body ground	Power switch off	11 to 14 V
I71-6 (ACC) - Body ground	Power switch on (ACC)	11 to 14 V

REPAIR OR REPLACE HARNESS OR CONNECTOR

4.	CHECK HARNESS AND CONNECTOR (REMOTE OPERATION CONTROLLER ASSEMBLY [REMOTE TOUCH] - NO. 10 CAN JUNCTION CONNECTOR)

(a) Disconnect the cable from the negative (-) auxiliary battery terminal.

*a	Front view of wire harness connector (to Remote Operation Controller Assembly [Remote Touch])

(b) Disconnect the remote operation controller assembly (remote touch) connector.

Standard Resistance:

Tester Connection	Condition	Specified Condition
I71-9 (MO+) - I71-8 (MO-)	Cable disconnected from negative (-) auxiliary battery terminal	108 to 132 Ω

REPLACE REMOTE OPERATION CONTROLLER ASSEMBLY (REMOTE TOUCH)

REPAIR OR REPLACE HARNESS OR CONNECTOR

5.	CHECK HARNESS AND CONNECTOR (NO. 10 CAN JUNCTION CONNECTOR - RADIO RECEIVER ASSEMBLY)

(a) Disconnect the No. 10 CAN junction connector.

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection	Condition	Specified Condition
I164-7 - I164-18	Cable disconnected from negative (-) auxiliary battery terminal	108 to 132 Ω

*a	Rear view of wire harness connector (No. 10 CAN Junction Connector)

GO TO STEP 11

6.	CHECK HARNESS AND CONNECTOR (NO. 10 CAN JUNCTION CONNECTOR - REMOTE OPERATION CONTROLLER ASSEMBLY [REMOTE TOUCH])

(a) Disconnect the No. 10 CAN junction connector.

*a	Rear view of wire harness connector (No. 10 CAN Junction Connector)

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection	Condition	Specified Condition
I164-9 - I164-20	Cable disconnected from negative (-) auxiliary battery terminal	108 to 132 Ω

GO TO STEP 12

7.	CHECK HARNESS AND CONNECTOR (NO. 10 CAN JUNCTION CONNECTOR - COMBINATION METER ASSEMBLY)

(a) Disconnect the No. 10 CAN junction connector.

*a	Rear view of wire harness connector (No. 10 CAN Junction Connector)

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection	Condition	Specified Condition
I164-11 - I164-22	Cable disconnected from negative (-) auxiliary battery terminal	200 Ω or higher

GO TO STEP 13

8.	CHECK VEHICLE TYPE

(a) Check the vehicle type.

Result	Proceed to
w/ Headup Display	A
w/o Headup Display	B

GO TO STEP 10

9.	CHECK HARNESS AND CONNECTOR (NO. 10 CAN JUNCTION CONNECTOR - COMBINATION METER MIRROR ECU)

(a) Disconnect the No. 10 CAN junction connector.

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection	Condition	Specified Condition
I164-8 - I164-19	Cable disconnected from negative (-) auxiliary battery terminal	200 Ω or higher

*a	Rear view of wire harness connector (No. 10 CAN Junction Connector)

GO TO STEP 14

10.	CHECK HARNESS AND CONNECTOR (NO. 10 CAN JUNCTION CONNECTOR - CLOCK ASSEMBLY)

(a) Disconnect the No. 10 CAN junction connector.

*a	Rear view of wire harness connector (No. 10 CAN Junction Connector)

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection	Condition	Specified Condition
I164-10 - I164-21	Cable disconnected from negative (-) auxiliary battery terminal	200 Ω or higher

REPLACE NO. 10 CAN JUNCTION CONNECTOR

GO TO STEP 15

11.	CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - NO. 10 CAN JUNCTION CONNECTOR)

(a) Disconnect the radio receiver assembly connector.

*a	Front view of wire harness connector (to Radio Receiver Assembly)

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection	Condition	Specified Condition
I152-5 (CNH1) - I152-6 (CNL1)	Cable disconnected from negative (-) auxiliary battery terminal	108 to 132 Ω

REPLACE RADIO RECEIVER ASSEMBLY

REPAIR OR REPLACE HARNESS OR CONNECTOR

12.	CHECK HARNESS AND CONNECTOR (REMOTE OPERATION CONTROLLER ASSEMBLY [REMOTE TOUCH] - NO. 10 CAN JUNCTION CONNECTOR)

(a) Disconnect the remote operation controller assembly (remote touch) connector.

*a	Front view of wire harness connector (to Remote Operation Controller Assembly [Remote Touch])

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection	Condition	Specified Condition
I71-9 (MO+) - I71-8 (MO-)	Cable disconnected from negative (-) auxiliary battery terminal	108 to 132 Ω

REPLACE REMOTE OPERATION CONTROLLER ASSEMBLY (REMOTE TOUCH)

REPAIR OR REPLACE HARNESS OR CONNECTOR

13.	CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - NO. 10 CAN JUNCTION CONNECTOR)

(a) Disconnect the combination meter assembly connector.

*a	Front view of wire harness connector (to Combination Meter Assembly)

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection	Condition	Specified Condition
I11-10 (MSCH) - I11-9 (MSCL)	Cable disconnected from negative (-) auxiliary battery terminal	54 to 69 Ω

REPLACE COMBINATION METER ASSEMBLY

REPAIR OR REPLACE HARNESS OR CONNECTOR

14.	CHECK HARNESS AND CONNECTOR (COMBINATION METER MIRROR ECU - NO. 10 CAN JUNCTION CONNECTOR)

(a) Disconnect the combination meter mirror ECU connector.

*a	Front view of wire harness connector (to Combination Meter Mirror ECU)

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection	Condition	Specified Condition
J5-14 (CS) - J5-15 (TX-)	Cable disconnected from negative (-) auxiliary battery terminal	54 to 69 Ω

REPLACE COMBINATION METER MIRROR ECU

REPAIR OR REPLACE HARNESS OR CONNECTOR

15.	CHECK HARNESS AND CONNECTOR (CLOCK ASSEMBLY - NO. 10 CAN JUNCTION CONNECTOR)

(a) Disconnect the clock assembly connector.

*a	Front view of wire harness connector (to Clock Assembly)

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection	Condition	Specified Condition
I159-4 (TX+1) - I159-3 (TX-1)	Cable disconnected from negative (-) auxiliary battery terminal	54 to 69 Ω

REPLACE CLOCK ASSEMBLY

REPAIR OR REPLACE HARNESS OR CONNECTOR

16.	CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY POWER SOURCE)

(a) Disconnect the combination meter assembly connector.

*a	Front view of wire harness connector (to Combination Meter Assembly)

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection	Condition	Specified Condition
I10-31 (ES) - Body ground	Always	Below 1 Ω

Standard Voltage:

Tester Connection	Condition	Specified Condition
I10-22 (B) - Body ground	Power switch off	11 to 14 V
I10-21 (IG+) - Body ground	Power switch on (IG)	11 to 14 V

REPAIR OR REPLACE HARNESS OR CONNECTOR

17.	CHECK HARNESS AND CONNECTOR (COMBINATION METER ASSEMBLY - NO. 10 CAN JUNCTION CONNECTOR)

(a) Disconnect the cable from the negative (-) auxiliary battery terminal.

*a	Front view of wire harness connector (to Combination Meter Assembly)

(b) Disconnect the combination meter assembly connector.

Standard Resistance:

Tester Connection	Condition	Specified Condition
I11-10 (MSCH) - I11-9 (MSCL)	Cable disconnected from negative (-) auxiliary battery terminal	54 to 69 Ω

REPLACE COMBINATION METER ASSEMBLY

REPAIR OR REPLACE HARNESS OR CONNECTOR

18.	CHECK HARNESS AND CONNECTOR (NO. 10 CAN JUNCTION CONNECTOR - RADIO RECEIVER ASSEMBLY)

(a) Disconnect the cable from the negative (-) auxiliary battery terminal.

(b) Disconnect the No. 10 CAN junction connector.

Standard Resistance:

Tester Connection	Condition	Specified Condition
I164-7 - I164-18	Cable disconnected from negative (-) auxiliary battery terminal	108 to 132 Ω

*a	Rear view of wire harness connector (No. 10 CAN Junction Connector)

GO TO STEP 22

19.	CHECK HARNESS AND CONNECTOR (NO. 10 CAN JUNCTION CONNECTOR - REMOTE OPERATION CONTROLLER ASSEMBLY [REMOTE TOUCH])

(a) Disconnect the cable from the negative (-) auxiliary battery terminal.

(b) Disconnect the No. 10 CAN junction connector.

Standard Resistance:

Tester Connection	Condition	Specified Condition
I164-9 - I164-20	Cable disconnected from negative (-) auxiliary battery terminal	108 to 132 Ω

*a	Rear view of wire harness connector (No. 10 CAN Junction Connector)

REPLACE NO. 10 CAN JUNCTION CONNECTOR

GO TO STEP 23

20.	CHECK HARNESS AND CONNECTOR (COMBINATION METER MIRROR ECU POWER SOURCE)

(a) Disconnect the combination meter mirror ECU connector.

*a	Front view of wire harness connector (to Combination Meter Mirror ECU)

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection	Condition	Specified Condition
J5-4 (ES) - Body ground	Always	Below 1 Ω

Standard Voltage:

Tester Connection	Condition	Specified Condition
J5-2 (B) - Body ground	Power switch off	11 to 14 V
J5-1 (IG) - Body ground	Power switch on (IG)	11 to 14 V

REPAIR OR REPLACE HARNESS OR CONNECTOR

21.	CHECK HARNESS AND CONNECTOR (COMBINATION METER MIRROR ECU - NO. 10 CAN JUNCTION CONNECTOR)

(a) Disconnect the cable from the negative (-) auxiliary battery terminal.

*a	Front view of wire harness connector (to Combination Meter Mirror ECU)

(b) Disconnect the combination meter mirror ECU connector.

Standard Resistance:

Tester Connection	Condition	Specified Condition
J5-14 (CS) - J5-15 (TX-)	Cable disconnected from negative (-) auxiliary battery terminal	54 to 69 Ω

REPLACE COMBINATION METER MIRROR ECU

REPAIR OR REPLACE HARNESS OR CONNECTOR

22.	CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - NO. 10 CAN JUNCTION CONNECTOR)

(a) Disconnect the radio receiver assembly connector.

*a	Front view of wire harness connector (to Radio Receiver Assembly)

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection	Condition	Specified Condition
I152-5 (CNH1) - I152-6 (CNL1)	Cable disconnected from negative (-) auxiliary battery terminal	108 to 132 Ω

REPLACE RADIO RECEIVER ASSEMBLY

REPAIR OR REPLACE HARNESS OR CONNECTOR

23.	CHECK HARNESS AND CONNECTOR (REMOTE OPERATION CONTROLLER ASSEMBLY [REMOTE TOUCH] - NO. 10 CAN JUNCTION CONNECTOR)

(a) Disconnect the remote operation controller assembly (remote touch) connector.

*a	Front view of wire harness connector (to Remote Operation Controller Assembly [Remote Touch])

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection	Condition	Specified Condition
I71-9 (MO+) - I71-8 (MO-)	Cable disconnected from negative (-) auxiliary battery terminal	108 to 132 Ω

REPLACE REMOTE OPERATION CONTROLLER ASSEMBLY (REMOTE TOUCH)

REPAIR OR REPLACE HARNESS OR CONNECTOR

24.	CHECK HARNESS AND CONNECTOR (CLOCK ASSEMBLY POWER SOURCE)

(a) Disconnect the clock assembly connector.

*a	Front view of wire harness connector (to Clock Assembly)

(b) Measure the resistance according to the value(s) in the table below.

Standard Resistance:

Tester Connection	Condition	Specified Condition
I159-2 (E) - Body ground	Always	Below 1 Ω

Standard Voltage:

Tester Connection	Condition	Specified Condition
I159-8 (B) - Body ground	Power switch off	11 to 14 V
I159-7 (ACC) - Body ground	Power switch on (ACC)	11 to 14 V

REPAIR OR REPLACE HARNESS OR CONNECTOR

25.	CHECK HARNESS AND CONNECTOR (CLOCK ASSEMBLY - NO. 10 CAN JUNCTION CONNECTOR)

(a) Disconnect the cable from the negative (-) auxiliary battery terminal.

*a	Front view of wire harness connector (to Clock Assembly)

(b) Disconnect the clock assembly connector.

Standard Resistance:

Tester Connection	Condition	Specified Condition
I159-4 (TX+1) - I159-3 (TX-1)	Cable disconnected from negative (-) auxiliary battery terminal	54 to 69 Ω

REPLACE CLOCK ASSEMBLY

REPAIR OR REPLACE HARNESS OR CONNECTOR

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